  Weak current-induced baryonic form factors at zero recoil are evaluated in
the rest frame of the heavy parent baryon using the nonrelativistic quark
model. Contrary to previous similar work in the literature, our quark model
results do satisfy the constraints imposed by heavy quark symmetry for
heavy-heavy baryon transitions at the symmetric point $v\cdot v'=1$ and are in
agreement with the predictions of the heavy quark effective theory for
antitriplet-antitriplet heavy baryon form factors at zero recoil evaluated to
order $1/m_Q$. Furthermore, the quark model approach has the merit that it is
applicable to any heavy-heavy and heavy-light baryonic transitions at maximum
$q^2$. Assuming a dipole $q^2$ behavior, we have applied the quark model form
factors to nonleptonic, semileptonic and weak radiative decays of the heavy
baryons. It is emphasized that the flavor suppression factor occurring in many
heavy-light baryonic transitions, which is unfortunately overlooked in most
literature, is very crucial towards an agreement between theory and experiment
for the semileptonic decay $\Lambda_c\to\Lambda e^+\nu_e$. Predictions for the
decay modes $\b,~\Lambda_c \to p\phi,~\Lambda_b\to\Lambda\gamma$,
$\Xi_b\to\Xi\gamma$, and for the semileptonic decays of $\Lambda_b,~\Xi_{b,c}$
and $\Omega_b$ are presented.
  }
